#sc-btn{position:fixed;right:18px;bottom:18px;z-index:9999;width:58px;height:58px;border-radius:50%;border:0;background:#263c30;color:#dce87b;font-size:26px;cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.3)}
#sc-box{position:fixed;right:18px;bottom:88px;z-index:9999;width:340px;max-width:calc(100vw - 36px);height:460px;max-height:calc(100vh - 110px);background:#fbfbf7;border:1px solid #d7dcd4;border-radius:14px;box-shadow:0 8px 28px rgba(0,0,0,.25);display:none;flex-direction:column;overflow:hidden;font:15px/1.4 system-ui,sans-serif;color:#202d29}
#sc-box.open{display:flex}
#sc-head{background:#263c30;color:#fff;padding:12px 14px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
#sc-head button{background:none;border:0;color:#dce87b;font-size:20px;cursor:pointer}
#sc-msgs{flex:1;min-height:0;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px;background:#edf0e9}
.sc-m{max-width:85%;padding:8px 11px;border-radius:12px;word-wrap:break-word}
.sc-u{align-self:flex-end;background:#dce87b}
.sc-b{align-self:flex-start;background:#fff;border:1px solid #d7dcd4}
.sc-b ul{margin:6px 0 0;padding-left:18px}
.sc-b a{color:#263c30;font-weight:600}
#sc-form{display:flex;gap:6px;padding:8px;border-top:1px solid #d7dcd4;background:#fbfbf7}
#sc-in{flex:1;min-width:0;padding:9px;border:1px solid #d7dcd4;border-radius:8px;font:inherit}
#sc-form button{background:#263c30;color:#fff;border:0;border-radius:8px;padding:0 14px;cursor:pointer;font:inherit}